Friends and colleagues have been congratulating Serena Williams and Alexis Ohanian after they released the first photos of their new baby, Alexis Olympia.
Fellow mom Victoria Azarenka expressed her feelings through emoji.
New World No.1 Garbiñe Muguruza admired the cute photos.
Mandy Minella and Jarmila Wolfe - both expecting babies of their own - offered their best wishes.
And of course proud new dad Alexis Ohanian posted his own message on social media.